The Statfold Barn Railway was completely new to me when I saw it for the first time walking a path out in the middle of nowhere – so, quite a surprise!
It’s owned by an enthusiast, who runs his collections of trains there, but it’s not open to the public except for three days a year - and one has to book a ticket months in advance..
According to Wikipedia, it’s one-and-a-half miles long. Quite a train-set.
Link: The Statfold Barn Railway